B-Man:
First, I got Sandbox this weekend, and all my other games were dropped. Its a lot of fun, and this is my fanboy "Thankyou!" to the developers. *waves*

I would like to see some mechanical functions, like for example, a "waterwheel" pixel that works like a pump/drain, but while processing matter, generates electricity. How about a "moving platform" that only moves when powered.

I do find the menus a little annoying, and so I would also like the option for a "favourite/recently used pixels" palette for quick selection.